ASTROSAT CZTI

Data Quality Report

Orbit 53253

Creation date: 2025-08-02T06:49:42.166999
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C09_011T08_9000006492_53253cztM0_level2.fits modeM0/AS1C09_011T08_9000006492_53253cztM0_level2_quad_clean.evt
Size (bytes)751,014,72082,166,400
Size716.2 MB 78.4 MB
Events in quadrant A4,177,880618,951
Events in quadrant B3,819,380682,903
Events in quadrant C14,280,734172,317
Events in quadrant D5,020,822563,185

Level1 data integrity


Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0169714
B0158842
C0468042
D0195212

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0210
B0220
C0220
D0220

Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01300
B01300
C01300
D01300

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A64593134.845951%
B64592173.359653%
C6459489275.739279%
D64593655.651030%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7664 6460 249 249 3.25% 3.85%
B 7664 6460 88 88 1.15% 1.36%
C 7663 6458 4600 4600 60.03% 71.23%
D 7664 6460 315 315 4.11% 4.88%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 230 431967 2599.19 670 654 165.9
A 0 8 319134 1919.23 670 654 165.9
A 15 174 161279 967.96 670 654 165.9
B 12 33 283813 1977.69 677 655 143.2
B 2 249 259745 1809.59 677 655 143.2
B 4 81 195229 1358.99 677 655 143.2
C 1 241 6521472 69089.28 340 339 94.4
C 15 165 3045913 32266.86 340 339 94.4
C 15 224 1781966 18875.76 340 339 94.4
D 10 172 505957 2698.94 650 620 187.2
D 12 3 354637 1890.76 650 620 187.2
D 13 170 313154 1669.2 650 620 187.2

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter